Temper rolling

During the process of annealing the heat causes a certain amount of buckling and distortion,and a further operation is necessary to produce flat coils. The annealed coil is decoiled and passed through a single-stand temper mill using a specially textured work roll surface,where it is given a light skin pass,typically of 0.75–1.25 per cent extension. This is necessary to remove buckles formed during annealing,to impart the appropriate surface texture to the strip,and to control the metallurgical properties of the strip. The strip is then rewound ready for despatch or finishing as appropriate.Car Repair Talk's forum.